Between The Rock

Precambrian

Quaternary

Neogene

Paleogene

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

million years ago (mya)

Cenozoic Era

Quaternary

0 to 2.58 mya

Neogene

2.58 to 23.03 mya

Paleogene

23.03 to 66 mya

Mesozoic Era

Cretaceous

66 to 145 mya

Jurassic

145 to 201.4 mya

Triassic

201.4 to 251.902 mya

Paleozoic Era

Permian

251.902 to 298.9 mya

Carboniferous

298.9 to 358.9 mya

Devonian

358.9 to 419.2 mya

Silurian

419.2 to 443.8 mya

Ordovician

443.8 to 485.4 mya

Cambrian

485.4 to 541 mya

Precambrian Era

541 mya to 4.6 billion years ago